The skid-mounted miniaturized electrodialysis coupled membrane alkaline absorption bromine extraction test device mainly targets bromine-containing raw material liquids of different grades and carries out technical services for the development and optimization verification of efficient, energy-saving and environmentally friendly new bromine extraction processes for industrialization. The device includes raw material pretreatment unit, electrodialysis unit, gas membrane absorption unit, evaporation unit and instrument automatic control system, which can be flexibly configured according to the owner's requirements. Through process and equipment collaborative innovation, it helps the efficient and environmentally friendly extraction of bromine resources. It has the following advantages: 1) Mature process and wide application range. It adopts the reliable "air blowing-urea reduction" process to prepare sodium bromide completion liquid, suitable for medium and low concentration bromine resources such as 0.05~0.5g/L. 2) Miniaturized skid-mounted equipment with strong applicability. Modular design is adopted to support remote transportation and rapid deployment. The number of skids can be adjusted according to the water quality and treatment volume at different extraction points to ensure extraction effect. 3) High safety and environmental protection. Electrodialysis does not require chlorine gas; the product is sodium bromide, which is easy to transport and store, and is not a hazardous chemical.
Application scope: Extraction of low-grade bromine resources that are relatively dispersed with large differences in water quality and bromine content, such as small-scale seawater, concentrated seawater, oil and gas field produced water, and mineral-associated bromine.
